Simonds, John Ormsbee, author
McGraw-Hill , 1994
Buku Teks
Simonds, John Ormsbee, author
McGraw-Hill, 1994
Buku Teks
edited by Peter Roberts, Hugh Sykes
Sage Publications, 2003
Buku Referensi
edited by Peter Roberts and Hugh Sykes
Sage, 2003
Buku Referensi
Newnes-Butterworths, 1979
Buku Teks